
public class quotient {
    public static void main(String[] args) {
        int sum = 0;
        for (int i = 1; i <= 1000; i++) {
            if (i % 3 == 0 && i % 7 == 0) {
                sum += i; 
            }
        }
        System.out.println("1到1000之间所有既能被3整除又能被7整除的数之和为:" + sum);
    }
}